Like what occurred with previous big 'N' update v6.20, they have again changed the TSEC firmware setup, blocked the previous 'smmuhax' exploit, and of course as usual added new 'Master Keys', and this time around they stopped 'package1 decryption, but now with v7.0.0-200 from Nintendo its really an 'cat & mouse' game, as already new 'keys have been found' less than a few hours after the update finally went live, but still if you wish to fully enjoy your Switch like Karen is doing so, then please stay for now on v6.2.0 and DO NOT UPDATE to v7.0.0 until you see the Official OK on the TX Front Page!
So for now please stay on v6.2.0 and to enjoy your Switch fully!